rust-data-processing 0.3.0

Schema-first ingestion (CSV, JSON, Parquet, Excel) into an in-memory DataSet, plus Polars-backed pipelines, SQL, profiling, validation, and map/reduce-style processing.
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[{"id":1,"active":true,"score":10.0},{"id":2,"active":true,"score":20.0},{"id":3,"active":false,"score":30.0}]